/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
return the newIOnlinePartyJoinInfoobject
[IOnlinePartyJoinInfoConstPtr](API\Plugins\OnlineSubsystem\Interfaces\IOnlinePartyJoinInfoConstPtr) MakeJoinInfoFromToken ( const [FString](API\Runtime\Core\Containers\FString) & Token ) const